From NetBSD:

	revision 1.7
	date: 2006/03/25 11:43:53;  author: rpaulo;  state: Exp;  lines: +23 -3
	PR 13604: detect and print correct information for 4.4BSD/NetBSD NFS
	filehandles.
	The heuristic may or may not be wrong, but no one replied in the
	tcpdump-workers mailing list.
	Extraction of the fsid information contributed by Chuck Silvers.

	Discussed with Chuck Silvers.
	----------------------------
	revision 1.6
	date: 2006/03/22 04:30:28;  author: christos;  state: Exp;  lines: +4 -2
	Coverity CID 563: Kill SUNOS3 case; it is dead code.
	----------------------------

1 files changed, 28 insertions, 2 deletions

diff --git a/parsenfsfh.c b/parsenfsfh.c
index 8894ad13..d5f877d8 100644
--- a/parsenfsfh.c
+++ b/parsenfsfh.c
@@ -42,7 +42,7 @@
 
 #ifndef lint
 static const char rcsid[] _U_ =
-    "@(#) $Header: /tcpdump/master/tcpdump/parsenfsfh.c,v 1.28 2004-03-25 03:30:55 mcr Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/parsenfsfh.c,v 1.29 2006-06-13 22:21:38 guy Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -79,6 +79,7 @@ static const char rcsid[] _U_ =
 #define	FHT_SUNOS5	9
 #define	FHT_AIX32	10
 #define	FHT_HPUX9	11
+#define	FHT_BSD44	12
 
 #ifdef	ultrix
 /* Nasty hack to keep the Ultrix C compiler from emitting bogus warnings */
@@ -146,6 +147,10 @@ int ourself;		/* true if file handle was generated on this host */
 #if	defined(__osf__)
 	    fhtype = FHT_DECOSF;
 #endif
+#if	defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__) \
+     || defined(__OpenBSD__)
+	    fhtype = FHT_BSD44;
+#endif
 	}
 	/*
 	 * This is basically a big decision tree
@@ -196,8 +201,11 @@ int ourself;		/* true if file handle was generated on this host */
 		 * could be Ultrix, IRIX5, AIX, or SUNOS5
 		 * might be HP-UX (depends on their values for minor devs)
 		 */
+		if ((fhp[6] == 0) && (fhp[7] == 0)) {
+		    fhtype = FHT_BSD44;
+		}
 		/*XXX we probably only need to test of these two bytes */
-		if ((fhp[21] == 0) && (fhp[23] == 0)) {
+		else if ((fhp[21] == 0) && (fhp[23] == 0)) {
 		    fhtype = FHT_ULTRIX;
 		}
 		else {
@@ -263,6 +271,18 @@ int ourself;		/* true if file handle was generated on this host */
 		*osnamep = "Auspex";
 	    break;
 
+	case FHT_BSD44:
+	    fsidp->Fsid_dev.Minor = fhp[0];
+	    fsidp->Fsid_dev.Major = fhp[1];
+	    fsidp->fsid_code = 0;
+
+	    temp = make_uint32(fhp[15], fhp[14], fhp[13], fhp[12]);
+	    *inop = temp;
+
+	    if (osnamep)
+		*osnamep = "BSD 4.4";
+	    break;
+
 	case FHT_DECOSF:
 	    fsidp->fsid_code = make_uint32(fhp[7], fhp[6], fhp[5], fhp[4]);
 			/* XXX could ignore 3 high-order bytes */
@@ -301,10 +321,16 @@ int ourself;		/* true if file handle was generated on this host */
 		*osnamep = "IRIX5";
 	    break;
 
+#ifdef notdef
 	case FHT_SUNOS3:
+	    /*
+	     * XXX - none of the heuristics above return this.
+	     * Are there any SunOS 3.x systems around to care about?
+	     */
 	    if (osnamep)
 		*osnamep = "SUNOS3";
 	    break;
+#endif
 
 	case FHT_SUNOS4:
 	    fsidp->Fsid_dev.Minor = fhp[3];